Tramas tróficas de peces de arrecifes en la región noroccidental de Cuba. II. Grupos funcionales
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| Format: | Artículo científico |
| Sprache: | es |
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Universidad de Costa Rica
2008
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| author | Ivet Hernández |
| author_facet | Ivet Hernández |
| contents | Tramas tróficas de peces de arrecifes en la región noroccidental de Cuba. II. Grupos funcionales Ivet Hernández Consuelo Aguilar Gaspar González Sansón Biología Cuba reef fish trophic webs cascade effect functional trophic groups Trophic webs of reef fishes at Cubas NW area. II. Functional groups. A conceptual model of the food webs, mainly with fish, was built in a rocky shore of Havana City with data covering from October 2004 to February 2006. The stomach contents of the most abundant fish was complemented with the literature. We used the Relative Importance Index method to describe diets of carnivorous and omnivorous fish; and a modification of the Relative Abundance method for sponge eaters and herbivorous fish. Agglomerative numeric classification techniques were used to determine the diets similarity. The matrix was made using Bray-Curtis dissimilarity index. Ten functional trophic groups were formed on the basis of diet similarity. The cascade effect is evidenced in this area by the big top predator shortage and the dominance of a few low trophic level species. The regulator role of top predators is low because of over-fishing: the trophic web of this area is highly altered. Rev. Biol. Trop. 56 (3): 1391-1401. Epub 2008 September 30. 2008 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44918834032 es http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.56 |
| format | Artículo científico |
| id | redalyc_44918834032 |
| institution | Redalyc |
| language | es |
| publishDate | 2008 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Tramas tróficas de peces de arrecifes en la región noroccidental de Cuba. II. Grupos funcionales Ivet Hernández Biología Cuba reef fish trophic webs cascade effect functional trophic groups Tramas tróficas de peces de arrecifes en la región noroccidental de Cuba. II. Grupos funcionales Ivet Hernández Consuelo Aguilar Gaspar González Sansón Biología Cuba reef fish trophic webs cascade effect functional trophic groups Trophic webs of reef fishes at Cubas NW area. II. Functional groups. A conceptual model of the food webs, mainly with fish, was built in a rocky shore of Havana City with data covering from October 2004 to February 2006. The stomach contents of the most abundant fish was complemented with the literature. We used the Relative Importance Index method to describe diets of carnivorous and omnivorous fish; and a modification of the Relative Abundance method for sponge eaters and herbivorous fish. Agglomerative numeric classification techniques were used to determine the diets similarity. The matrix was made using Bray-Curtis dissimilarity index. Ten functional trophic groups were formed on the basis of diet similarity. The cascade effect is evidenced in this area by the big top predator shortage and the dominance of a few low trophic level species. The regulator role of top predators is low because of over-fishing: the trophic web of this area is highly altered. Rev. Biol. Trop. 56 (3): 1391-1401. Epub 2008 September 30. 2008 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44918834032 es http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.56 |
| title | Tramas tróficas de peces de arrecifes en la región noroccidental de Cuba. II. Grupos funcionales |
| topic | Biología Cuba reef fish trophic webs cascade effect functional trophic groups |
| url | https://www.redalyc.org/articulo.oa?id=44918834032 |